---
product_id: 27070033
title: "SPAX1/4\" x 3-1/2\" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant"
brand: "spax"
price: "$U3679"
currency: UYU
in_stock: true
reviews_count: 8
url: https://www.desertcart.uy/products/27070033-spax1-4-x-3-1-2-exterior-washer-head-structural
store_origin: UY
region: Uruguay
---

# Grade 5 heat-treated strength 1/4" x 3-1/2" size Rust resistant for outdoor use SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant

**Brand:** spax
**Price:** $U3679
**Availability:** ✅ In Stock

## Summary

> 🔧 Build Better, Build Boldly!

## Quick Answers

- **What is this?** SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant by spax
- **How much does it cost?** $U3679 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/27070033-spax1-4-x-3-1-2-exterior-washer-head-structural)

## Best For

- spax enthusiasts

## Why This Product

- Trusted spax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Strength:** Heat-treated for Grade 5 durability, ensuring long-lasting performance under pressure.
- • **Sleek & Modern Design:** Transform your projects with a contemporary washer head that enhances aesthetics.
- • **Universal Compatibility:** T-Star drive works with all standard bits for effortless installation.
- • **Code Compliant Confidence:** ICC-ES recognized for structural applications, giving you peace of mind in every build.
- • **Innovative Thread Technology:** Experience faster installation and reduced wood splitting with our patented threads.

## Overview

The SPAX 1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws are engineered for superior performance and durability. Featuring a sleek low-profile design, these screws offer excellent clamping ability with reduced driving torque. Heat-treated for Grade 5 strength, they are rust-resistant and ICC-ES recognized for structural applications, making them ideal for both treated lumber and exterior projects. Each pack includes a compatible bit for your convenience.

## Description

SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant

## Features

- T-Star Screw: The trend setting low profile built-on washer head design offers a contemporary & sleek finished installation. Excellent draw down strength without the need for a separate washer delivers superior clamping ability and 40% less driving torque
- Heat Treated Grade 5 Durability: Stay Stronger for Longer! Subjecting the PowerLag screw to heat treating gives greater strength and reduces breakage. Tested under the toughest scenarios to give you confidence in every connection
- Check out our Threads: Our patented thread technology allows the washer head screw to be driven faster, is easier to install, and reduces splitting in wood. Let SPAX take some of the hassle out of your next project. The item includes a bit in the pail
- ICC-ES building code recognized for use in structural wood to wood applications. ICC-ES Report ESR-1783. Manufactured to imperial size standards leading pull-through and withdrawal values. Recommended for use in treated lumber and exterior applications
- T-star Screw: T-Star drive accepts and is compatible with all industry standard bits. Our 6-Lobe design corrosion resistant screw provides superior bit engagement. Better bit engagement means quicker installation with less effort

## Images

![SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant - Image 1](https://m.media-amazon.com/images/I/41Mhc+j2cYL.jpg)
![SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant - Image 2](https://m.media-amazon.com/images/I/61C+hRkqVzL.jpg)
![SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant - Image 3](https://m.media-amazon.com/images/I/61Wpyk4vf4L.jpg)
![SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant - Image 4](https://m.media-amazon.com/images/I/81bP437bGWL.jpg)
![SPAX1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant - Image 5](https://m.media-amazon.com/images/I/71Yyr6Q1rOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great customer service.
  

*by S***H on Reviewed in the United States on May 16, 2023*

When I reported a problem with the delivery of my order, SPAX responded fast and took care of it immediately. Great service. Very happy with the outcome. Will be a repeat customer.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Great for heavy duty construction.
  

*by C***. on Reviewed in the United States on April 4, 2023*

Tough product, unlikely to strip out like Phillips head screws. Big heads to hold strong without sinking too deep. These are my go to screws, but I also use them sparingly because of the relatively expensive cost.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Description was on the money
  

*by T***E on Reviewed in the United States on November 18, 2020*

Great product is the job right for me

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---

*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-09*